Ignis-fatuus ??

В STRING OF PEARLS [the original penny dreadful featuring SWEENEY TODDTHE DEMON BARBER OF FLEET STREET, ed.] , глава 12, читаю-

It brings with it that unhappy restlessness of intellect which is ever straining after the unattainable, and which is never content to know the end and ultimatum of earthly hopes and wishes; no, the whole life of such persons is spent in one long struggle for a fancied happiness, which like the ignis-fatuus of the swamp glitters but to betray those who trust to its delusive and flickering beams.

Чудное болотное явление, вот что про него пишут-

Ignis-fatuus (plural- ignes fatui , "fool's fires") или Will-o'-the-wisp: Ghostly lights sometimes seen at night or twilight that hover over damp ground in still air — often over bogs. It looks like a flickering lamp, and is sometimes said to recede if approached. Much folklore surrounds the legend, but science has offered several potential explanations.

Spooky!!!

Вот они:

Will-o'-the-Wisp sketch by Rob Alexander, from Selecting Ninth Edition